DISTRIBUTED MANAGEMENT THREE APPROACHES ARE BEING DEFINED MIB BASED EXPRESSION MIB EVENT MIB NOTIFICATION LOG MIB SCRIPT BASED SCRIPT MIB SCHEDULE MIB REMOTE OPERATIONS BASED REMOTE OPERATIONS MIB Copyright © 2001 by Aiko Pras These sheets may be used for educational purposes

EXPRESSION AND EVENT MIB

EXPRESSION AND EVENT MIB: CHARACTERISTICS STANDARD MIB APPROACH RESEMBLES THE OLD SNMPv2 M2M MIB EXPRESSION MIB: INPUT ARE (WILDCARDED) VARIABLES OF A (LOCAL) MIB OPERATES ON ABSOLUTE AS WELL AS DELTA VALUES RICH SET OF EXPRESSIONS THE OUTPUT IS STORED IN THE VALUE TABLE THIS TABLE MAY SERVE AS INPUT FOR OTHER EXPRESSIONS EVENT MIB: INPUT ARE VARIABLES OF A (REMOTE) MIB TRIGGERS ON CHANGES, OR TRESHOLD CROSSING GENERATES A NOTIFICATION OR SET OPERATION

SCRIPT MIB H T T P S N M P SNMP I C M P M AAAAA RUNTIME ENVIRONMENT SCRIPT REPOSITORY TOP LEVEL AGENTS MANAGER INTERMEDIATE LEVEL MANAGER

SCRIPT MIB: CHARACTERISTICS FUNCTIONALITY CAN BE DEFINED AT RUN-TIME POWERFUL AUTONOMOUS ACTIONS MAY BE EASIER TO OPERATE FOR THE TOP-LEVEL MANAGER PROTECTION MECHANISMS NECESSARRY DIFFERENT SCRIPT LANGUAGES

SCRIPT MIB: STRUCTURE CONSISTS OF 6 TABLES

SCRIPT MIB: LANGUAGE TABLE DEFINES THE LANGUAGES THIS SYSTEM SUPPORTS AN OID TO INDICATE THE LANGUAGE THE VERSION AN OID TO INDICATE THE VENDOR THE REVISION A DESCRIPTION TABLE IS READ ONLY

SCRIPT MIB: EXTENSIONS TABLE DEFINES THE EXTENSIONS FOR EACH LANGUAGE AN OID TO INDICATE THE EXTENSION THE VERSION AN OID TO INDICATE THE VENDOR THE REVISION A DESCRIPTION TABLE IS READ ONLY

SCRIPT MIB: SCRIPT TABLE LISTS ALL SCRIPTS KNOWN TO THE SYSTEM ALLOWS TO: DOWNLOAD SCRIPTS FROM A URL (PULL MODEL) READ SCRIPTS FROM LOCAL NON-VOLATILE STORAGE STORE SCRIPTS IN LOCAL NON-VOLATILE STORAGE DELETE SCRIPTS FROM LOCAL NON-VOLATILE STORAGE LIST PERMANENT SCRIPTS (THAT CAN NOT BE CHANGED OR REMOVED) READ AND MODIFY THE SCRIPT STATUS (ENABLED, DISABLED, EDITING )

SCRIPT MIB: CODE TABLE LISTS THE CODE OF A SCRIPT ALLOWS TO: DOWNLOAD SCRIPTS VIA SNMP (PUSH MODEL) MODIFY SCRIPTS VIA SNMP (EDITING ) IMPLEMENTATION IS OPTIONAL

SCRIPT MIB: LAUNCH TABLE ALLOWS TO: ASSOCIATE A SCRIPT WITH A ‘PERSON’ WHO INVOKES EXECUTION PROVIDE ARGUMENTS AND PARAMETERS FOR SCRIPT INVOCATION INVOKE SCRIPTS WITH A SINGLE SET OPERATION CONTROL THE NUMBER OF ACTIVE INVOCATIONS CONTROL THE TOTAL NUMBER OF INVOCATIONS

SCRIPT MIB: RUN TABLE ALLOWS TO: RETRIEVE STATUS INFORMATION FROM RUNNING SCRIPTS CONTROL RUNNING SCRIPTS (SUSPEND, RESUME, ABORT) RETRIEVE RESULTS FROM RECENTLY TERMINATED SCRIPTS CONTROL THE REMAINING MAXIMUM LIFETIME OF A RUNNING SCRIPT CONTROL HOW LONG SCRIPT RESULTS ARE ACCESSIBLE

SCHEDULE MIB PERFORMS SET OPERATIONS FOR EXAMPLE ON THE SCRIPT MIB TARGET MUST BE Integer32 ON A PERIODIC OR CALENDER DRIVEN BASE

REMOTE OPERATIONS MIB PING MIB TO PERFORM PING FROM A REMOTE HOST TRACEROUTE MIB TO PERFORM TRACEROUTE FROM A REMOTE HOST NAME LOOKUP MIB TO PERFORM NAME LOOKUP FROM A REMOTE HOST